pic: Portable Power Pack for Operator Interface

[CD47-Bot]

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[mtaman02]

Many Many teams including the vets have tried to make their sticks wirelessly powered. This example of how to do it is one of the best and simple ways I have ever seen. I wish I woulda did this 2+ years ago when I had visited the Mayor with the Team and Robot.....=) who says you need a power adapter when you could go get 3 9v and wire them together. .......... The 9 volts are they series or parrallel wired.

[team222badbrad]

They are in parallel.

A series connection would result in 27 volts Say goodbye to your OI.

See the white paper for directions

http://www.chiefdelphi.com/forums/pa...er&paperid=362

[ZACH P.]

I built one with 3 9volts, but it drained too fast for my liking, so then I built one with 6 D cells. I've had it for a few months now, and I've never replaced the batteries. Works great.

[sanddrag]

We just used the 14 lb robot battery! (fused of course ) I don't think we've EVER had to charge it. Have had a couple fuses blow for some odd reason though.

[Mike AA]

May I reccamend a Rechargeable set of 6 AA batteries with a 6 cell holder (available at Radio Shack or Digikey), wired the same but uses only one 9 Volt clip. that way you could use a charger to charge the individual AA batteries and use then elsewhere and they'll typically last much longer than the 9 Volt. but less weight compared to 6 D size.

[Astronouth7303]

Why not use a RC car rechargeable bat? (besides $$)

[Jay H 237]

About how long do the three nine volt batteries last? I know it depends on how many joysticks and and other controls you have for the OI but I'm only looking for a rough idea.

[greencactus3]

Originally Posted by Astronouth7303

Why not use a RC car rechargeable bat? (besides $$)

rc cars are usually 6cell 7.2v and some are 7cell 8.4v. next would be 8cell 9.6v.. would that be ok for the oi? how picky is it? since we only have one oi, id rather not test it... and anyways, rc car batteries are normally made to rush all the juice out quickly(=car runs faster but shorter time). such as some 3300mAh.. dont know if the OI'll suck it all that fast but you really dont need to spend your money on rc car batteries which will probably tend to cost more than rechargeable AA batteries. i think thats the way to go

[FizMan]

I think we'll do that for next year, and rig a stand on our 2002 robot and use that to carry out our 2005 bot instead of the human powered trolley... though... on second thought, best to stick with the trolley... I can just see our robot fall and go boom.

[greencactus3]

Originally Posted by FizMan

I think we'll do that for next year, and rig a stand on our 2002 robot and use that to carry out our 2005 bot instead of the human powered trolley... though... on second thought, best to stick with the trolley... I can just see our robot fall and go boom.

you'd prolly have to tether it anyways so you wouldnt need the porta-batterypack no radio except on field right?

[Joshua May]

I'll have to make one of these. Usually we just wire up one of the big batteries and carry it in a backpack.